Answers

Subtract 15/20 from 8/15

8/15 - 15/20 is -13/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   8/15 = 8 × 4/15 × 4 = 32/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   15/20 = 15 × 3/20 × 3 = 45/60
4. Subtract the two like fractions:
   32/60 - 45/60 = 32 - 45/60 = -13/60

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁶/₁₅-¹⁵/₂₀ ⁸/₁₅-³⁰/₂₀ ⁸/₃₀-¹⁵/₂₀ ⁸/₁₅-¹⁵/₄₀ ²⁴/₁₅-¹⁵/₂₀ ⁸/₁₅-⁴⁵/₂₀ ⁸/₄₅-¹⁵/₂₀ ⁸/₁₅-¹⁵/₆₀ ⁴⁰/₁₅-¹⁵/₂₀ ⁸/₁₅-⁷⁵/₂₀ ⁸/₇₅-¹⁵/₂₀ ⁵⁶/₁₅-¹⁵/₂₀

Subtract Fractions Calculator